In a bowl, mix shredded chicken, crumbled bacon, ranch dressing, and green onions until well combined. Set aside.

Preheat your oven to 350°F. Line a baking sheet with a silicone mat.

Arrange mozzarella slices on the silicone mat, leaving space between them. Bake for 5-7 minutes, until bubbly and golden brown. Watch closely after 5 minutes to prevent burning.

Remove the cheese from the oven and let it cool for 1 minute. It should be soft enough to roll but not too hot to handle. If needed, return to the oven for 30 seconds to soften.

Spoon the chicken bacon mixture along one edge of each cheese slice. Roll tightly and place seam-side down.